were photographs of the prints of Lee Harvey Oswald, are accurate Photographs of .prints from the objects, Commission Exhibit Nos.. 637, 649, 142, and 641, and that the prints on Commission Exhibit Nos. 637, 649, 142, and 641, are the prints of Lee Harvey Oswald.
Signed this 17th day of September 1964, at Washington, D.C.
(S) Det. Arthur Mandella NYCPD,
ARTHUR MANDELLA.
John F. Gallagher
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Testimony of John F. Gallagher

The testimony of John F. Gallagher was taken at 10 a.m. on September 15, 1964, at 200 Maryland Avenue NE., Washington, D.C., by Mr. Norman Redlich, assistant counsel of the President's Commission.

Mr. Redlich.

The purpose of this deposition is to take the testimony of Mr. John F. Gallagher. Mr. Gallagher, before we start I would like to advise you that under the rules of this Commission you are entitled to 3 days' notice prior to your testimony. You have not had 3 days' notice. However, you are also free to waive that notice if you wish. Are you willing to testify this morning?

Mr. Gallagher.

I am, Sir.

Mr. Redlich.

It is customary to administer an oath, so would you stand ? Do you solemnly swear that the testimony you are about to give will be the truth, the whole truth, and nothing but the truth, so help you God ?

Mr. Gallagher.

I do.

Mr. Redlich.

For the record, would you state your name?

Mr. Gallagher.

My name is John F. Gallagher.

Mr. Redlich.

Mr. Gallagher, what is your occupation ?

Mr. Gallagher.

I am a special agent of the Federal Bureau of Investigation, presently assigned to the Physics and Chemistry Section of the FBI Laboratory.

Mr. Redlich.

How long have you been with the FBI ?

Mr. Gallagher.

I have been with the FBI approximately 18 years.

Mr. Redlich.

Very briefly, what has been the nature of your affiliation with the FBI?

Mr. Gallagher.

The greater part of that 18 years I have been assigned to the FBI Laboratory, and in particular to the Physics and Chemistry Section. I work in the spectrographic unit of the FBI Laboratory.

Mr. Redlich.

And this is what you have been doing for the greater portion of your 18 years with the FBI ?

Mr. Gallagher.

That is correct.

Mr. Redlich.

What is your educational background, Mr. Gallagher?

Mr. Gallagher.

I graduated from Boston College with a bachelor of science degree in 1939, and I returned for 2 years on a fellowship to obtain a master of science degree.
When I entered the military service I was sent for a 9-month course at Massachusetts Institute of Technology in meteorology. Following my discharge from. the Army, I joined the Federal Bureau of Investigation. I received special agents' training, and have taken specialized courses during my period in the FBI, one of which was a course in neutron activation analysis at the Oak Ridge National Laboratory---correction--at Oak Ridge Institute of Nuclear Studies, from September 24 to October 5, 1962.

Mr. Redlich.

Are you familiar with a technique of analysis which is called neutron activation analysis ?

Mr. Gallagher.

Yes, sir; I am familiar with the technique known as neutron activation analysis.

Mr. Redlich.

Could you describe briefly, without reference to the specific evidence that is under investigation here, the nature of this technique?

Mr. Gallagher.

Neutron activation analysis involves subjecting small samples to a beam of sub-atomic particles known as neutrons. Elements within the